CN108110435A - The millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading - Google Patents
The millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading Download PDFInfo
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- CN108110435A CN108110435A CN201711268696.6A CN201711268696A CN108110435A CN 108110435 A CN108110435 A CN 108110435A CN 201711268696 A CN201711268696 A CN 201711268696A CN 108110435 A CN108110435 A CN 108110435A
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- horn antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0241—Waveguide horns radiating a circularly polarised wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
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- Waveguide Aerials (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention relates to a kind of millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading, single medium plane lens of its over top are arranged on comprising circularly-polarizedhorn horn antenna main body and covering；Wherein, single medium plane lens include dielectric substrate and the embedded multiple array elements being provided at its inner portion；The array element is using square cylinder and opens up the structure type of circular through hole in its center, and is arranged inside dielectric substrate using the phase compensation principle algorithm based on feed phase center；Circularly-polarizedhorn horn antenna main body includes the rectangular waveguide set gradually from the bottom to top, the circular waveguide with angle of chamfer and horn-like circle open ended waveguide.The present invention is using the array element with circular through hole as the elementary cell of list medium plane lens, diameter by the circular through hole for adjusting each array element, control phase distribution, it realizes the effect of phase compensation to circularly-polarizedhorn horn antenna transmitting electromagnetic wave, achievees the purpose that improve its gain and directionality.
Description
Technical field
A kind of loaded the present invention relates to antenna, in particular to using single medium plane lens, high-gain, broadband are integrated
The millimeter wave circularly-polarizedhorn horn antenna of change, belongs to antenna design techniques field, is mainly used in satellite communication, radar, imaging etc.
Field.
Background technology
Recently as greatly developing for modern communications and Radar Technology, the frequency spectrum resource of traditional low microwave frequency band is increasingly
Anxiety, therefore millimere-wave band is increasingly becomed the hot spot that numerous researchers explore and pay close attention to and is asked with its abundant frequency spectrum resource
Topic.Millimeter wave antenna since with compact structure, higher gain, directionality and narrow beam width can be obtained, radar, into
There is important application prospect in the fields such as picture, satellite communication.
Electromagnetic horn is a kind of common power radiator, has simple in structure, beam direction stabilization, broadband, low pair
The features such as valve is a preferably selection of millimeter wave antenna.Since the gain of electromagnetic horn is mainly determined by its physical size.It is right
For high-gain, the application demand of narrow beam, the volume of electromagnetic horn is often bigger.And when Antenna aperture size increases
To a certain extent, the mouth face phase cancellation caused by path difference acts on, and the gain of electromagnetic horn does not increase anti-drop.In order to improve loudspeaker
The gain of antenna and directionality and the compactedness for keeping antenna structure, just have scholar to propose the electromagnetic horn of loaded lenses
Concept.By loading the electromagnetic lens of 3 D stereo in bell mouth surface, realize the spherical surface of the feed waveguide radiation of electromagnetic horn
Electromagnetic wave is adjusted to the plane wave with preferable directionality.The electromagnetic lens of 3 D stereo is mainly utilized outside the curved surface of dielectric material
Shape realizes the function of electromagnetic wave phase compensation, and curved surface medium has that continuous phase compensation characteristic, phase error be small, frequency bandwidth
It is wider, but still remain the problems such as volume is bigger, difficulty of processing is high.On the contrary, planar di-lens utilizes individual layer phase shift
The characteristics of unit realizes phase compensation function, has volume compact, light-weight, easy processing, so as to increasingly be subject to people's
Favor.
In order to adapt to the demand in satellite communication broadband, high data rate transfers, broadband, high-gain are proposed to satellite antenna
It is required that.The planar lens recorded at present is mostly using the form of harmonic period unit composition two-dimensional planar array.Harmonic period unit
Often there is narrowband, multilevel-cell has wider bandwidth but there are problems for thickness weight.In order to realize individual layer broadband
Transmissive arrays are, it is necessary to explore a kind of Wideband wave transparent unit, the not only shape with plane, but also meet spaceborne application structure intensity
Requirement.
Based on a kind of above-mentioned, millimeter wave high-gain Circular polarization horn day of single medium plane lens loading of present invention proposition
Line, to solve shortcoming in the prior art and limitation.
The content of the invention
The object of the present invention is to provide a kind of millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading,
By the use of the array element with circular through hole as the elementary cell of single medium plane lens, by adjusting each array element
The diameter of circular through hole controls phase distribution, realizes the effect of phase compensation to circularly-polarizedhorn horn antenna transmitting electromagnetic wave, reaches
Improve the purpose of its gain and directionality.
To achieve the above object, the present invention provides a kind of millimeter wave high-gain circular polarisation loudspeaker of single medium plane lens loading
Antenna, the list being arranged on comprising circularly-polarizedhorn horn antenna main body and covering above the circularly-polarizedhorn horn antenna body top
Medium plane lens；Wherein, single medium plane lens include dielectric substrate and insertion is arranged in the dielectric substrate
Multiple array elements in portion；The array element is using square cylinder and opens up the structure type of circular through hole in its center,
And it is arranged inside dielectric substrate using the phase compensation principle algorithm based on feed phase center；The circular polarisation loudspeaker
Antenna body includes the rectangular waveguide set gradually from the bottom to top, the circular waveguide with angle of chamfer and opening to be changed from narrow to wide
Horn-like circle open ended waveguide.
Inside dielectric substrate, uniform intervals are set between each array element.
The phase compensation principle algorithm based on feed phase center is specially：It sets feed phase center and is located at list
The focal position of medium plane lens, the phase distribution of each array elementIt is expressed as：
θi=tan-1(ri/f)；
F=h-p；
Wherein, λ0For the aerial wavelength of incidence wave, θiDeviate the angle of main shaft for incident path, f is single medium plane
The focal length of lens, riFor the distance in the axle center of the single medium plane lens of incidence point distance；H is the height of circularly-polarizedhorn horn antenna main body
Degree, p are distance of the phase center of circularly-polarizedhorn horn antenna main body apart from circular waveguide bottom；
The phase distribution of each array element in obtained single medium plane lens, determines each array element
The diameter of circular through hole.
The array element is suitable for linear polarised electromagnetic wave or circular polarisation electromagnetic wave.
The dielectric substrate uses the material with high-k to be made.
Annular metal boss is provided at the open top position of the circle open ended waveguide, single medium plane lens pass through
It is embedded to be arranged on the connection realized in the metal bosses with circularly-polarizedhorn horn antenna main body.
Air layer is additionally provided between single medium plane lens and circularly-polarizedhorn horn antenna main body, positioned at circle open wave
The inside led.
Line circular polarisation converter of the circular waveguide with angle of chamfer as circularly-polarizedhorn horn antenna main body, the circle ripple
The bottom led is additionally provided with the rectangular waveguide changeover portion being connected with rectangular waveguide, and the top of the circular waveguide is additionally provided with to be open with circle
The circular waveguide changeover portion of waveguide connection.
The tangent line of the circular waveguide and the angle of horizontal direction are 45 °, and the length of the circular waveguide is 1.3 λ0。
In conclusion the millimeter wave high-gain Circular polarization horn day of list medium plane lens loading provided by the present invention
Line using the broadband wave transparent characteristic of the array element of individual layer single hole, is conducive to improve the bandwidth of single medium plane lens；Using height
The dielectric substrate of dielectric constant advantageously reduces the thickness of single medium plane lens, improves the phase compensation of monolayer array unit
Ability；Using the form of single medium plane lens load circular polarization electromagnetic horn, volume compact can be kept, have it is simple in structure,
The advantages of light-weight, at low cost, is particularly suitable for the application demand of middle-size and small-size satellite circular-polarization high gain communication.
Description of the drawings
Fig. 1 is the structural representation of the millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading in the present invention
Figure；
Fig. 2 is the top view of single medium plane lens in the present invention, arrangement of the array of display unit inside dielectric substrate
State；
Fig. 3 is the structure diagram of array element in the present invention；
Fig. 4 is array element in the present invention to the frequency response schematic diagram of normal incidence electromagnetic wave；
Fig. 5 is the schematic diagram of single phase compensation principle of the medium plane lens based on feed phase center in the present invention；
Fig. 6 is the electromagnetic horn reflectance factor schematic diagram of the planar lens loading in the present invention；
Fig. 7 is the direction schematic diagram for the circularly-polarizedhorn horn antenna that single medium plane lens loading is whether there is in the present invention；Wherein,
Fig. 7 a do not load single medium plane lens, the single medium plane lens of Fig. 7 b loadings；
Fig. 8 is the schematic diagram of the circularly-polarizedhorn horn antenna gain of single medium plane lens loading in the present invention；
Fig. 9 be single medium plane lens loading in the present invention circularly-polarizedhorn horn antenna axis than schematic diagram.
Specific embodiment
Below in conjunction with Fig. 1~Fig. 9, by preferred embodiment to the technology contents of the present invention, construction feature, institute's reached purpose
And effect is described in detail.
As shown in Figure 1, the millimeter wave high-gain Circular polarization horn for single medium plane lens loading provided by the present invention
Antenna is layered structure, and the circularly-polarizedhorn horn antenna main body 2 is arranged on comprising circularly-polarizedhorn horn antenna main body 2 and covering
Single medium plane lens 1 of over top；Wherein, single medium plane lens 1 include dielectric substrate 11 and insertion is set
Put multiple array elements 12 inside the dielectric substrate 11；The circularly-polarizedhorn horn antenna main body 2 include from the bottom to top according to
The rectangular waveguide 21 of secondary connection setting, rectangular waveguide changeover portion 22, circular waveguide 23,24 and of circular waveguide changeover portion with angle of chamfer
Be open the horn-like circle open ended waveguide 25 changed from narrow to wide.
As shown in figure 3, the array element 12 is using square cylinder and opens up the structure shape of circular through hole in its center
Formula, and uniform intervals are set between each array element 12.In a preferred embodiment of the invention, the array element 12
Modeling and simulation is completed by CST Microwave Studio, Frequency Design 94GHz, between adjacent array element 12
Spacing be 1.3mm.The array element with circular through hole is to the frequency response of normal incidence electromagnetic wave as shown in figure 4, anti-
Impedance bandwidth when penetrating coefficient less than 10dB is 90.8~98.1GHz, is less than 0.4dB with interior transmission loss.In design frequency
Insertion loss at 94GHz is 0.01dB, return loss 26dB.At this point, the dielectric constant of dielectric substrate 11 is 3.02, thickness
For 6mm, 1.88 times of 94GHz air wavelength are equivalent to.
As shown in Fig. 2, inside the dielectric substrate 11, multiple array elements 12 are using based on feed phase center
Phase compensation principle algorithm carries out front arrangement.Specifically, as shown in figure 5, set the bores of single medium plane lens 1 as D, coke
Away from for f, feed phase center is located at the focal position of single medium plane lens 1；According to the phase compensation principle of geometric optics, respectively
The phase distribution of the two-dimentional front of a array element 12It can be expressed as：
θi=tan-1(ri/f)；
F=h-p；
Wherein, λ0For the aerial wavelength of incidence wave, θiDeviate the angle of main shaft for incident path, f is single medium plane
The focal length of lens 1, riFor the distance in the axle center of the single medium plane lens 1 of incidence point distance；xiAnd yiIt is vertically projected to for incidence point
Coordinate value in the plane of single medium plane lens 1；H is the height of circularly-polarizedhorn horn antenna main body 2, and p is Circular polarization horn day
Distance of the phase center of line main body 2 apart from 23 bottom of circular waveguide；
The phase distribution of each array element 12 in obtained single medium plane lens 1, determines each array list
The diameter of the circular through hole of member 12.
In a preferred embodiment of the invention, the height of circularly-polarizedhorn horn antenna main body 2 be 47.8mm, Circular polarization horn day
Distance of the phase center of line main body 2 apart from 23 bottom of circular waveguide is 9.8mm, therefore the focal length of single medium plane lens 1 is
38mm.And single medium plane lens 1 realize phase compensation using the array element 12 with circular through hole of size gradation
Effect, the bores of single medium plane lens 1 are 64mm, and the frequency of array element 12 is 94GHz, the dielectric constant of dielectric substrate 11
For 3.02, thickness 6mm, the phase of each array element 12 in single medium plane lens 1 can be obtained according to above-mentioned formula
Bit distribution, and then determine the diameter of the circular through hole of each array element 12.
The array element 12 is suitable for linear polarised electromagnetic wave or circular polarisation electromagnetic wave.
The dielectric substrate 11 is made of the microwave high-frequency plate with high-k.
As shown in Figure 1, annular metal boss 251 is provided at the open top position of the circle open ended waveguide 25, it is single
Medium plane lens 1 are arranged on the connection realized in the metal bosses 251 with circularly-polarizedhorn horn antenna main body 2 by embedded.
Air layer 3 is additionally provided between single medium plane lens 1 and circularly-polarizedhorn horn antenna main body 2, is opened positioned at circle
The inside of mouth waveguide 25.
Line circular polarisation converter of the circular waveguide 23 with angle of chamfer as circularly-polarizedhorn horn antenna main body 2, should
The upper and lower ends of circular waveguide 23 are respectively arranged with the rectangular waveguide changeover portion being connected with rectangular waveguide 21 and circle open ended waveguide 25
22 and circular waveguide changeover portion 24.The tangent line of the circular waveguide 23 and the angle of the x-axis of horizontal direction are 45 °, the circular waveguide 23
Length be 1.3 λ0(i.e. 1.3 times of wavelength).
Below by way of a specific embodiment, the millimeter wave for single medium plane lens loading that the present invention will be described in detail provides
High-gain circularly-polarizedhorn horn antenna.In the present embodiment, the design frequency of circularly-polarizedhorn horn antenna is 94GHz, and planar lens loads
Electromagnetic horn reflectance factor as shown in fig. 6, in figure S11 represent electromagnetic horn reflectance factor.It is put down by loading single medium
Face lens 1, reflectance factor of the circularly-polarizedhorn horn antenna in the entire passband of 88~104GHz are below -10dB.
Whether there is the loading of single medium plane lens circularly-polarizedhorn horn antenna E faces and H faces directional diagram it is as shown in Figure 7.Wherein,
As shown in Figure 7a, there is beam split and shows in the center of the circularly-polarizedhorn horn antenna directional diagram of no single medium plane lens loading
As this is that the electromagnetic wave of circular waveguide radiation the effect of reverse phase counteracting occurs when reaching horn mouth diametric plane.Circularly-polarizedhorn horn antenna
On-axis gain only has 12.1dB in 94GHz, and circularly-polarizedhorn horn antenna is 39 ° in main lobe 3dB beam angles, secondary lobe less than-
2.1dB.As shown in Figure 7b, by loading single medium plane lens, phasing, circle are carried out to the electromagnetic wave on horn mouth diametric plane
The normal direction gain of polarization electromagnetic horn is 28.1dB, adds 16dB, and loads the Circular polarization horn of single medium plane lens
Antenna is 5.5 ° in main lobe 3dB beam angles, and secondary lobe is less than -23.6dB.
Therefore, by loading single medium plane lens, directionality, gain and the beam angle of circularly-polarizedhorn horn antenna, pair
The performances such as valve are obtained for a degree of improvement.Gain such as Fig. 8 of the circularly-polarizedhorn horn antenna of single medium plane lens loading
Shown, by loading single medium plane lens, the highest-gain of electromagnetic horn reaches 30.4dB in 88GHz.Single medium plane is saturating
The axis ratio of the circularly-polarizedhorn horn antenna of mirror loading is as shown in figure 9,3dB axial ratio bandwidths are 88~104GHz.
In conclusion the millimeter wave high-gain Circular polarization horn day of list medium plane lens loading provided by the present invention
Line, by the use of the array element with circular through hole as the elementary cell of single medium plane lens, by adjusting each array list
The diameter of the circular through hole of member controls phase distribution, realizes the effect of phase compensation to circularly-polarizedhorn horn antenna transmitting electromagnetic wave,
So as to achieve the purpose that improve its gain and directionality.Also, the broadband wave transparent characteristic of the array element using individual layer single hole, has
Beneficial to the bandwidth for improving single medium plane lens；Using the dielectric substrate of high-k, it is saturating to advantageously reduce single medium plane
The thickness of mirror improves the phase compensation ability of monolayer array unit；Utilize single medium plane lens load circular polarization electromagnetic horn
Form, volume compact can be kept, have the advantages that simple in structure, light-weight, at low cost, be particularly suitable for middle-size and small-size satellite entelechy
Change the application demand of high-gain communication.
Compared with prior art, the present invention has the following advantages and beneficial effect：
1st, the millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading provided by the invention, can meet W
The application demand of wave band circular polarisation satellite communication；
2nd, different from the antenna of conventional planar lens loading, medium base is made using the material of high-k in the present invention
Piece, array element is using square cylinder and opens up the structure type of circular through hole in its center, has broadband, low-loss spy
Point, and it is compact-sized, thickness is low；
3rd, using joint circularly-polarizedhorn horn antenna phase center single medium plane lens design method, with reference to entelechy
Change the arrangement of each array element in the phase center design lens of electromagnetic horn, have and improve antenna entire gain and efficiency
Effect；
4th, circularly-polarizedhorn horn antenna main body may extend to other with single medium plane lens using integrated design method
Millimeter wave high frequency band even THz wave bands, suitable for the planar lens antenna of any other size, suitable for circular-polarization high gain
Antenna, while it is also applied for the design, modeling and processing of linear polarization high-gain aerial；
5th, each subregion of entire antenna array is produced using printed circuit board technology, at low cost, precision is high, reproducible,
It is suitble to produce in enormous quantities.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a kind of millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading, which is characterized in that include：Entelechy
Change electromagnetic horn main body and cover the single medium plane lens being arranged on above the circularly-polarizedhorn horn antenna body top；
Single medium plane lens include dielectric substrate and the embedded multiple array lists being arranged on inside the dielectric substrate
Member；
The array element is using square cylinder and opens up the structure type of circular through hole in its center, and in dielectric substrate
It is arranged using the phase compensation principle algorithm based on feed phase center in portion；
The circularly-polarizedhorn horn antenna main body includes the rectangular waveguide set gradually from the bottom to top, the circular waveguide with angle of chamfer
The horn-like circle open ended waveguide changed from narrow to wide with opening.
2. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as described in claim 1, feature
It is, inside dielectric substrate, uniform intervals are set between each array element.
3. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as described in claim 1, feature
It is, the phase compensation principle algorithm based on feed phase center is specially：Setting feed phase center is located at Dan Jie
The focal position of matter planar lens, the phase distribution of each array elementIt is expressed as：
θi=tan-1(ri/f)；
F=h-p；
Wherein, λ0For the aerial wavelength of incidence wave, θiDeviate the angle of main shaft for incident path, f is single medium plane lens
Focal length, riFor the distance in the axle center of the single medium plane lens of incidence point distance；H be circularly-polarizedhorn horn antenna main body height, p
For distance of the phase center apart from circular waveguide bottom of circularly-polarizedhorn horn antenna main body；
The phase distribution of each array element in obtained single medium plane lens determines the circle of each array element
The diameter of through hole.
4. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as described in claim 1, feature
It is, the array element is suitable for linear polarised electromagnetic wave or circular polarisation electromagnetic wave.
5. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as described in claim 1, feature
It is, the dielectric substrate uses the material with high-k to be made.
6. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as described in claim 1, feature
It is, annular metal boss is provided at the open top position of the circle open ended waveguide, and single medium plane lens pass through embedding
Enter to be arranged on the connection realized in the metal bosses with circularly-polarizedhorn horn antenna main body.
7. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as claimed in claim 6, feature
It is, air layer is additionally provided between single medium plane lens and circularly-polarizedhorn horn antenna main body, positioned at circle open ended waveguide
Inside.
8. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as claimed in claim 4, feature
It is, line circular polarisation converter of the circular waveguide with angle of chamfer as circularly-polarizedhorn horn antenna main body, the circular waveguide
Bottom be additionally provided with the rectangular waveguide changeover portion being connected with rectangular waveguide, the top of the circular waveguide is additionally provided with and circle open wave
Lead the circular waveguide changeover portion of connection.
9. the millimeter wave high-gain circularly-polarizedhorn horn antenna of list medium plane lens loading as claimed in claim 8, feature
It is, the tangent line of the circular waveguide and the angle of horizontal direction are 45 °, and the length of the circular waveguide is 1.3 λ0。
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| CN201711268696.6A CN108110435B (en) | 2017-12-05 | 2017-12-05 | Millimeter wave high-gain circularly polarized horn antenna loaded by single-medium planar lens |
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| CN114156665A (en) * | 2022-02-08 | 2022-03-08 | 华南理工大学 | Broadband circularly polarized transmission array antenna based on dielectric structure |
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| CN108963416A (en) * | 2018-07-24 | 2018-12-07 | 成都菲斯洛克电子技术有限公司 | Circular waveguide antenna array structure in millimeter wave safety check instrument |
| CN109462018A (en) * | 2018-10-30 | 2019-03-12 | 东南大学 | Single more shaped-beam broadband circle polarized millimeter waves of feed gain controllable transmit array antenna |
| WO2020087847A1 (en) * | 2018-10-30 | 2020-05-07 | 东南大学 | Single-feed gain controllable multi-shaped-beam and wideband circular polarization millimetre wave transmission array antenna |
| CN109830811A (en) * | 2019-01-31 | 2019-05-31 | 中国电子科技集团公司第五十四研究所 | A kind of large caliber wide angle sweep multibeam antenna |
| CN109830811B (en) * | 2019-01-31 | 2024-04-16 | 中国电子科技集团公司第五十四研究所 | Large-caliber wide-angle scanning multi-beam antenna |
| CN110336137A (en) * | 2019-07-25 | 2019-10-15 | 东南大学 | A kind of impedance matching high-gain lens antenna and its design method |
| CN110336137B (en) * | 2019-07-25 | 2021-07-27 | 东南大学 | Impedance matching high-gain lens antenna and design method thereof |
| CN112582803B (en) * | 2019-09-30 | 2022-08-12 | Oppo广东移动通信有限公司 | Array lens, lens antenna, and electronic apparatus |
| CN112582803A (en) * | 2019-09-30 | 2021-03-30 | Oppo广东移动通信有限公司 | Array lens, lens antenna, and electronic apparatus |
| CN112984456A (en) * | 2019-12-02 | 2021-06-18 | Sl株式会社 | Optical lens and lighting device using same |
| CN111585030A (en) * | 2020-06-23 | 2020-08-25 | 中国人民解放军国防科技大学 | High-power microwave polarization conversion super-lens antenna |
| CN111585030B (en) * | 2020-06-23 | 2022-08-02 | 中国人民解放军国防科技大学 | High-power microwave polarization conversion super lens antenna |
| CN113823916A (en) * | 2021-08-31 | 2021-12-21 | 中国电子技术标准化研究院 | Method for preparing terahertz lens horn antenna |
| US20230148063A1 (en) * | 2021-11-11 | 2023-05-11 | Raytheon Company | Planar metal fresnel millimeter-wave lens |
| US11870148B2 (en) * | 2021-11-11 | 2024-01-09 | Raytheon Company | Planar metal Fresnel millimeter-wave lens |
| CN113851856A (en) * | 2021-12-01 | 2021-12-28 | 成都频岢微电子有限公司 | Broadband high-gain metal lens antenna based on four-ridge waveguide |
| CN114374093A (en) * | 2022-01-04 | 2022-04-19 | 中信科移动通信技术股份有限公司 | Horn antenna |
| CN114374093B (en) * | 2022-01-04 | 2023-11-24 | 中信科移动通信技术股份有限公司 | horn antenna |
| CN114421137A (en) * | 2022-01-18 | 2022-04-29 | 中国电子科技集团公司第三十九研究所 | Broadband sector beam circularly polarized antenna and system |
| CN114156665A (en) * | 2022-02-08 | 2022-03-08 | 华南理工大学 | Broadband circularly polarized transmission array antenna based on dielectric structure |
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